Re: [EXTERNAL] Re: Conformance files in PQ, HLG, SDR-BT.709?

Do we have contacts at either of those two companies?

On Wed, Dec 6, 2023 at 12:39 PM Seeger, Chris (NBCUniversal) <
Chris.Seeger@nbcuni.com> wrote:

> Thanks so much 😊. This will move us forward more quickly.
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> Two new apps to test that might be worth some more investigation:
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> Photomator
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> https://apps.apple.com/us/app/photomator-photo-editor/id1444636541
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> Affinity Photo
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> https://apps.apple.com/us/app/affinity-photo-2/id1616822987?mt=12
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> Best,
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> Chris
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>
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> *From: *Chris Blume (ProgramMax) <programmax@gmail.com>
> *Date: *Wednesday, December 6, 2023 at 11:52 AM
> *To: *Seeger, Chris (NBCUniversal) <Chris.Seeger@nbcuni.com>
> *Cc: *Portable Network Graphics (PNG) Working Group <public-png@w3.org>
> *Subject: *Re: [EXTERNAL] Re: Conformance files in PQ, HLG, SDR-BT.709?
>
> Simon is right.
> I'll work on adding cICP chunks now.
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>
>
> On Wed, Dec 6, 2023 at 11:11 AM Seeger, Chris (NBCUniversal) <
> Chris.Seeger@nbcuni.com> wrote:
>
> Yes.  They are public. Can we start with cicp only as they are not
> required for PQ, HLG or SDR?
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>
> If you show me how to do it, and with what tools, maybe I can help.
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>
> Best,
>
> Chris
>
>
>
> Get Outlook for iOS
> <https://urldefense.com/v3/__https:/aka.ms/o0ukef__;!!PIZeeW5wscynRQ!uLCseTAx_Hyxx7ImY4JuTY9ZQE6yQqk9WuV4Jp7w5pOovkCOED_tSs63dlwwyry1KgwghWlvJWWUJ5s7UYwx$>
> ------------------------------
>
> *From:* Chris Blume (ProgramMax) <programmax@gmail.com>
> *Sent:* Wednesday, December 6, 2023 10:37:11 AM
> *To:* Seeger, Chris (NBCUniversal) <Chris.Seeger@nbcuni.com>
> *Cc:* Portable Network Graphics (PNG) Working Group <public-png@w3.org>
> *Subject:* [EXTERNAL] Re: Conformance files in PQ, HLG, SDR-BT.709?
>
>
>
> I can hexedit in cICP values.
>
> Although, maybe I should wait until we have mDCv and cLLi values as well?
> How long do you think it would take to get those values?
>
> My thought is: I don't want to start distributing test images only to
> later tell people to use these new test images instead (when they don't yet
> have a way to see which ones are new/old).
> But maybe it will take a while to get mDCv and cLLi values. So maybe it
> would be good to get some new test images sooner?
>
> (Are these images public domain? Can we distribute them widely?)
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>
>
> On Wed, Dec 6, 2023 at 8:53 AM Seeger, Chris (NBCUniversal) <
> Chris.Seeger@nbcuni.com> wrote:
>
> Hi Chris and All,
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>
>
> Do we have any conformance files in each format (PQ, HLG, SDR-BT.709)?
> I’ve got a number of developers who’d like to add the functionality into
> their apps. Once of them requested test files.
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> I’ve created test files if someone can add cICp chunks to them:
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> https://www.dropbox.com/scl/fo/a44vfxw3p21kvkh8nywpc/h?rlkey=v63ekq5y49kd4omg59ng9q3zr&dl=0
> <https://urldefense.com/v3/__https:/www.dropbox.com/scl/fo/a44vfxw3p21kvkh8nywpc/h?rlkey=v63ekq5y49kd4omg59ng9q3zr&dl=0__;!!PIZeeW5wscynRQ!u3P4S_qNlSUgxiBGGql3lAci2mnjiYXwiMFO_BJmTverJdmVa01jIZup7LNb0VmqqIefc7ZiC_qDHR576Lqb$>
>
>
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> SDR CICP: 1-1-1 (Narrow and Full Range versions marked NR or FR)
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> PQ CICP: 9-16-9 (Full Range only as there is no benefit to NR PQ)
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> HLG CICP: 9-18-9 (Narrow and Full Range versions marked NR or FR)
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> I will send mDCv and cLLI values (just an example at a later date since
> cICp is most important to get to developers).
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> Thanks very much,
>
>
>
> *Chris Seeger*
>
> Director, Advanced Content Production
>
> Office of the CTO
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> C: 551-238-3768
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> [image: signature_856391991]
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